package com.zzh.test;

import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.UnsupportedEncodingException;

import org.junit.Test;

import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;
 

public class Base64 {  
    // 加密  
    public static String getBase64(String str) {  
        byte[] b = null;  
        String s = null;  
        try {  
            b = str.getBytes("utf-8");  
        } catch (UnsupportedEncodingException e) {  
            e.printStackTrace();  
        }  
        if (b != null) {  
            s = new BASE64Encoder().encode(b);  
        }  
        return s;  
    }  
  
    // 解密  
    public static String getFromBase64(String s) {  
        byte[] b = null;  
        String result = null;  
        if (s != null) {  
            BASE64Decoder decoder = new BASE64Decoder();  
            try {  
                b = decoder.decodeBuffer(s);  
                result = new String(b, "utf-8");  
            } catch (Exception e) {  
                e.printStackTrace();  
            }  
        }  
        return result;  
    }  
    public static void main(String[] args) {
    	System.out.println("");
	}
    @Test
    public  void test() throws Exception{ 
    	String file="E:/xxx.txt";
    	FileReader fr = new FileReader(file);
    	BufferedReader br = new BufferedReader(fr);
    	String str = null,sum="";
    	while((str=br.readLine())!=null){
    		sum+=str;
    	}
    	System.out.println(Base64.getFromBase64(sum));
    	
    	
    	
    	
    }
    
}